# \#grand-marquis **URL:** https://community.cartalk.com/tag/grand-marquis/14277.md [Latest](https://community.cartalk.com/latest.md) · [Categories](https://community.cartalk.com/categories.md) · [Tags](https://community.cartalk.com/tags.md) --- ## [Flashing check engine light Mercury Grand Marquis](https://community.cartalk.com/t/flashing-check-engine-light-mercury-grand-marquis/199659)
**Author:** [@Expose.the.truth.530\_193262](https://community.cartalk.com/u/Expose.the.truth.530_193262)\ **Replies:** 12\ **Last updated:** [March 30, 2025, 3:26pm UTC](https://community.cartalk.com/t/flashing-check-engine-light-mercury-grand-marquis/199659 "2025-03-30T15:26:37Z")
My uncle has a 2000 Mercury Grand Marquis that has a check engine light that flashes once it warms up and then after about five minutes the light goes solid and stops blinking. It also loses power and feels like the car … --- ## [Gas smell from vents. What is this part?](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170)
**Author:** [@DougCarTalk\_187097](https://community.cartalk.com/u/DougCarTalk_187097)\ **Replies:** 4\ **Last updated:** [October 2, 2023, 1:43pm UTC](https://community.cartalk.com/t/gas-smell-from-vents-what-is-this-part/193170 "2023-10-02T13:43:37Z")
I have a picture of a part by my gas tank in a 2011 Mercury Grand Marquis. It’s leaking gas. When i run the heat or AC it smells like gas. And if it sits for a while, it has a hard time starting. No dash lights though. … --- ## [OBD1 to OBD2 adapter for chip tuning on older cars](https://community.cartalk.com/t/obd1-to-obd2-adapter-for-chip-tuning-on-older-cars/189842)
**Author:** [@riverdvs605\_184657](https://community.cartalk.com/u/riverdvs605_184657)\ **Replies:** 29\ **Last updated:** [April 1, 2023, 12:17pm UTC](https://community.cartalk.com/t/obd1-to-obd2-adapter-for-chip-tuning-on-older-cars/189842 "2023-04-01T12:17:00Z")
I’m curious if I can use an OBD1 to OBD2 adapter to install a chip tuner on my 1994 Mercury Grand Marquis. Obviously if possible it won’t provide all the listed performance upgrades but I’m wondering if it will change an… --- ## [Rattling noise in park and upon acceleration](https://community.cartalk.com/t/rattling-noise-in-park-and-upon-acceleration/189413)
**Author:** [@Todd58](https://community.cartalk.com/u/Todd58)\ **Replies:** 6\ **Last updated:** [March 2, 2023, 10:53pm UTC](https://community.cartalk.com/t/rattling-noise-in-park-and-upon-acceleration/189413 "2023-03-02T22:53:42Z")
When the vehicle is idling in park, there is a rattling sound coming from underneath, somewhere near the middle. When I put it in drive or in reverse and just start to accelerate, it gets louder. Then it goes away once p… --- ## [2005 Grand Marquis drives like there is no control and now rattles!](https://community.cartalk.com/t/2005-grand-marquis-drives-like-there-is-no-control-and-now-rattles/185746)
**Author:** [@Todd58](https://community.cartalk.com/u/Todd58)\ **Replies:** 8\ **Last updated:** [August 11, 2022, 8:09pm UTC](https://community.cartalk.com/t/2005-grand-marquis-drives-like-there-is-no-control-and-now-rattles/185746 "2022-08-11T20:09:21Z")
I have a power steering like hissing noise so I replaced the power steering pump. However, I still had the noise. I took it to a local car mechanic and they told me it was the power steering module. When I drove away, it… --- ## [Cranks but Intermittent no Start when Warm](https://community.cartalk.com/t/cranks-but-intermittent-no-start-when-warm/176326)
**Author:** [@Saint-Louis-Guy](https://community.cartalk.com/u/Saint-Louis-Guy)\ **Replies:** 10\ **Last updated:** [May 8, 2021, 4:32pm UTC](https://community.cartalk.com/t/cranks-but-intermittent-no-start-when-warm/176326 "2021-05-08T16:32:17Z")
Greetings, cold start is fine on 2008 Mercury Marquis. After a short (2 mile) drive to the store to buy some groceries it will crank but sometimes refuse to start. So the car is stuck in the store parking lot. Repeate… --- ## [Odd problem](https://community.cartalk.com/t/odd-problem/168415)
**Author:** [@Vjandjs\_169779](https://community.cartalk.com/u/Vjandjs_169779)\ **Replies:** 15\ **Last updated:** [August 9, 2020, 3:35am UTC](https://community.cartalk.com/t/odd-problem/168415 "2020-08-09T03:35:29Z")
The other day when I pulled into a gas station I noticed smoke coming from under my hood. It was coming from the back drivers side up near the wipers near the fire wall and not the engine. I took it to the shop and they … --- ## [Tire Safety Question](https://community.cartalk.com/t/tire-safety-question/163474)
**Author:** [@tess.m.sewell\_166796](https://community.cartalk.com/u/tess.m.sewell_166796)\ **Replies:** 6\ **Last updated:** [April 27, 2020, 11:22pm UTC](https://community.cartalk.com/t/tire-safety-question/163474 "2020-04-27T23:22:49Z")
Hi there - I have a question for all of you people who know something about cars/tires! The other day, I arrived at the store and noticed my passenger side rear tire was almost completely flat. No idea if the damage hap… --- ## [Replace '96 Grand Marquis door keppad](https://community.cartalk.com/t/replace-96-grand-marquis-door-keppad/157843)
**Author:** [@connman](https://community.cartalk.com/u/connman)\ **Replies:** 7\ **Last updated:** [February 3, 2020, 8:51pm UTC](https://community.cartalk.com/t/replace-96-grand-marquis-door-keppad/157843 "2020-02-03T20:51:53Z")
Hi. Ford dealership says my keyless entry keypad is bad. About $350 to replace. Independent mechanic says they can’t because of issues requiring programming. Since this is a wired keypad and is just inputting “numbers” i…